Na
Sodium Symbol (Na)
Sodium is element 11 of the periodic table. Copy its symbol Na and see its atomic weight, electron configuration and common compounds.
What does Na mean?
Na is the chemical symbol for sodium, element number 11 in the periodic table. Sodium is an alkali metal in group 1, period 3. It is a soft, highly reactive metal; its symbol Na comes from the Latin natrium.
Codes and properties
| Chemical symbol | Na |
|---|---|
| Atomic number (Z) | 11 |
| Standard atomic weight | 22.990 |
| Group / period | 1 / 3 |
| Element category | alkali metal |
| Electron configuration | 1s² 2s² 2p⁶ 3s¹ |
| Common compounds | NaCl, NaOH, NaHCO₃, Na₂CO₃ |
How to type Na
- Plain text: type
Na— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as NaCl — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Na}in math mode, or use the mhchem package:\ce{Na}. - HTML:
Na; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for sodium?
The chemical symbol for sodium is Na.
What is the atomic number of sodium?
Sodium has atomic number 11, meaning each atom has 11 protons.
What is the electron configuration of sodium?
The ground-state electron configuration of sodium is 1s² 2s² 2p⁶ 3s¹.